Smoke box casing for a locomotive



Oct. 5 1937. c, c E 2,095,192

SMOKE BOX CASING FOR A LOCOMOTIVE Filed July 17, 1936 5 Sheets-Sheet 1 FIG I WI TNESS 4 I N VEN TOR i'farr dflackm;

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Oct. 5, 1937. H. c. DECKER 2,095,192

SMOKE BOX CASING FOR A LOCOMOTIVE Filed July 17, 1936 5 Sheets-Sheet 2 l YZGEE W I TNESSES: I N V EN TOR:

Oct. 5, 1937. H. c. DECKER SMOKE BOX CASING FOR A LOCOMOTIVE Filed July 17, 1956 5 Sheets-Sheet; 5

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SMOKE BOX CASING FOR A LOCOMOTIVE Filed July 17, 193.6 5 Sheets-Sheet 4.

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I H. C. DECKER SMOKEY BOX CASING FOR A LOCOMOTIVE Filed July 17, 1936 5 Sheets-Sheet 5 m w T E M M V6 0 m [w front portion of a locomotive equipped with the Patented Oct. 5, 1 937 I i wag 2,095,192 7 sMonn nox CASING FOR: A LQCOMOTIVE V flarry ic. :Decker, AltoonaQPa;v assignor to The Pennsylvania Railroad Company, Philadelphia,

Pa'., a corporation of Pennsylvania Application July 17, 1936, Serial No. 9 1,156; .3 Claims. (01. 105-2) locomotives} the front of theusual smoke-boxrequires alcasin'gjof streamline design such as the bulletnose. Inorder to avoid the expense and difficulties of introducing an entirely new type of smoke -b'ox, it hasbecome desirable to providesuc'h a casing which will combine with and becomelstructurally part of the usual type of smoke-box. The severe service demands upon railway structures further complicate the problem of howthis is to be done safely. An insecure front casingwould be serious in the case and allows routine access to the smoke-box proper. Other objects are concealment of securing fittings to reduce wind resistance and simplicity and economy of construction. Still further objects and advantages will become apparent from the following detailed description of one embodiment of the invention, reference being had to the accompanying drawings.

Fig, I of the drawings is a side view of the invention.

Fig. II is a front view of same.

Fig. III is a sectional view taken about the lines III-III of Fig. II. V

Fig. IV is a sectional view taken about the lines IVIV of Fig. III.

Fig. V is a sectional view taken about the lines V--V of Fig. III. 1

Fig. VI is a sectional view taken about the lines VI-VI of Figs. I and III.

Fig. VII is a fragmentary view of the hinge and joint between the casing and casing door of Fig. VI, showing details of construction.

Fig. VIII is a sectional view about the lines VIII-VIII of Fig. II.

Fig. IX is a sectional view about'the lines Fig. X is a sectional view about the lines X-X of Fig. 1, showing the interior of the smoke-box access door in the front ofthe smoke-box casing.

The specific embodiment of the invention I6 welded inside its rear edge.

shown in thedrawing's may, for'the purposes of a detailed description, be analyzed generally into a locomotive smoke-box I having a stack 2, and a hinged door 3, abodycasing'4, a smoke-box casing "5 having an access (100116 witha headlight housing 'I. 7

The smoke-box I is of a conventional type withthe usual smoke-box'door 3. Around the forward circular edgeof the smoke-box; Iv are welded a number of blocks I I which are designed to hold the body casing 4'in' place at its forward end, within which is welded a retaining ring I2.

This ring I 2 is'recessed to form a shoulder l3 which engages the blocks I I as shown in Fig. IX. The body casing 4 is part of an outer shell placed around the locomotive to lower the wind resist ance and this body casing 4 is formed with smoke-box casing 5 according to principles of streamlining. 'The bullet nose shape of the casing 5 is designed'to fit into the general streamline scheme both at its sides and at its bottom portion I4. A supporting shelf 42 is also provided to receive the bottom part of the casing 5, the shelf 42 being firmly fastened to the front part of the locomotive as shown.

The smoke-box casing 5 has a retaining ring This retaining ring I6 is recessed to form a shoulder which cooperates in engagement with a similar shoulder formed on ring I2. These rings I2 and I6 are locked in engagement by dogs II attached to the front of the smoke-box I. The dogs I! are of a usual type and need not be described in detail. They consist of a bolt 20 held in place by a nut 2I, a securingelement 22 having a hole to receive the bolt 20, and a nut I9 for holding the element 22 in place. The smoke-box casing 5 is strengthened by interior ribs 23 which radiate from a strengthening ring 24 which forms the access door opening. The ring 24 is welded in place as are the ribs 23..

The access door 6 has a strengthening ring 25 welded in place and recessed to form a shoulder which cooperates in engagement with a similar shoulder formed on strengthening ring 24. The

interiorly placed hinges 30 are important; ex-

terior hinges would materially increase the wind resistance and impair the efliciency of the streamlining. These hinges 30 comprise brackets 3| and 32 attached respectively to rings 24 and 25, and pivotally joined arms 33 pivotally attached to the brackets 3| and 32. This hinge 30 allows the door 6 to be swung completely clear of the door opening and also permits seating adjustment as the door 6 is closed. A head-light housing I of d T U Nl .T oY- srA-TE s "PA-TENT]OFFICE?! a usual type is placed in the center of the access door 6. The housing comprises a frame 36, a hinged bezel door 37 having glass face 38 and a fastening means 39 of a usual type. The access door 6 is also strengthened by ribs 4| on its inner face.

In order to relieve the strain on the hinges 30 by which the access door 6 is attached to the casing 5, a number of countersunk screws 40 are provided. These screws 40 normally hold the door 6 in place; the hinges 30 are useful in open ing and shutting the door 6.

It is evident that the inventionshows a simple and rugged means of providing a bullet nose for the front of a streamlined locomotive. The smooth outer surface is maintained and a strong structural unit is provided.

While the above description of oneembodiment of the invention is in some detail, it will be obvious to one skilled in the art that various variations and changes may be made without departing from the spirit of the invention as hereinafter claimed.

Having thus described my invention, I claim:

1. In combination with a locomotive smoke-box partially covered by a body casing, a detachable smoke-box casing over the front of the smokebox in continuation of the body casing, said casings being of a form to reduce wind resistance, a retaining ring on the front edge of the body casing, blocks positioned around the front part of the smoke-box and secured thereto, said retaining ring having a shoulder for locking against said blocks, a retaining ring attached to the edge of said smoke-box casing, said two retaining rings being in abutting relation with cooperating positioning shoulders at the joint, dogs fastened to the smoke-box for holding said rings together, and an access door in said smoke-box casing having interiorly placed hinges, said door being further secured in place to said smoke-box casing by recessed screws and cooperating shoulders located at the joint and partially on the door and partially on the casing.

2. In combination with a locomotive smokebox, a detachable casing of a form having low wind resistance characteristics, means for securing the casing to the smoke-box, including a retaining ring secured around the casing edge, means attached to the smoke-box for abutting contact with saidring and dogs attached to the smoke-box for holding said ring in said abutting contact, an interiorly hinged access door in said casing, and a head-light housing in said door.

3. In combination with a locomotive smokebox, a detachable casing of a form having low wind resistance characteristics, said casing having an access door opening formed therein, means for securing the casing to the smoke-box, an interiorly hinged access door in said casing comprising brackets secured to said door and casing and having pivotally attached arms which are pivotally joined to each other, a strengthening ring attached to said casing around said access door opening, a second strengthening ring attached to said door around the edge thereof, said strengthening rings having cooperating shoulders formed thereon, and a head-light housing in said door.

HARRY C. DECKER. 

